__________he is very old, _______he still wants to help others.

下列各句中，加横线的成语使用恰当的一项是（ ）

The two men who had drunk too much stood ________ at each other on the road as if they were very angry with each other.

Don’t let such an unimportant matter as this come between us _____ we can concentrate on the major issue.

Would you please help me clean the classroom – .